Soil microbial production of indolic and phenolic compounds derived from aromatic amino acids is regarded as an important factor in plant development. Plant growth was promoted upon the addition of L-tryptophan (Trp) to soil (Frankenberger et al. 1990; Frankenberger and Arshad 1991a,b). Environmental fluctuations cause increased Trp contents in soil and regulate the microbial production of indole-3-acetic acid (auxin), of its storage product indole-3-ethanol, and of anthranilic acid from the precursor Trp (Lebuhn et al. 1994). Microbial auxin and indole-3-ethanol exert auxin-phytohormone effects on plants (Martin et al. 1989; Müller et al. 1989; Selvadurai et al. 1991). Auxin also seems to control the induction of plant resistance mechanisms (Jouanneau et al. 1991).
Weitere Kapitel dieses Buchs durch Wischen aufrufen
- Indolic and Phenolic Compounds
- Springer Berlin Heidelberg